please make sure that your heater host and the accessories of the heater host are compatible with the motherboard on the link. If it is inconsistent with your original, please do not purchase it will cause an error. My suggestion is to purchase our matching monitors, motherboards, and wiring harness products to make the heater host normal Operation. (Not suitable for Webasto, Most Eberspacher is suitable.) Features: 1. The LCD display is easy to read. 2. With control button function fuel filling manual mode, timing start or stop, time setting, etc. 3. Great: The parking heater controller is user-friendly and supports timing start or stop. Remote control pairing is convenient and fast. 4. Special design: The parking heater knob controller has a manual fueling mode and is quickly set by the knob. The product has been thoroughly tested before shipment to ensure the product is perfect. 5. Widely used: 12V / 24V power supply voltage parking heater controller, suitable for cars, trucks, etc. Specifications: Custom model: Universal Voltage: 12/24V Display: Lcd Lcd Connector: 3 Pins Remote Control: 4 Button Features: - Remote control pairing. - Fuel filling manual mode. - Timing starts or stops. - Set time. Remote control to code description. In the off setting state, press the first button and press the confirmation button to retain more than 3 seconds. Go to the remote control startup code interface, display HFA, press the remote control remote control code, the code exits the code interface, the machine is in the ship state, if the code fails, it will not enter the ship state. The code timeout will automatically exit the code state. Beforeplacinganorder,pleasemakesurethatyourheaterhostandtheaccessoriesoftheheaterhostarecompatiblewiththemotherboardonthelink.Mysuggestionistopurchaseourmatchingmonitors,motherboards,andwiringharnessproductstomaketheheaterhostnormalOperation.